CA1201936A - Arrangement for dismounting and mounting a pump fixed to a tank - Google Patents
Arrangement for dismounting and mounting a pump fixed to a tankInfo
- Publication number
- CA1201936A CA1201936A CA000417647A CA417647A CA1201936A CA 1201936 A CA1201936 A CA 1201936A CA 000417647 A CA000417647 A CA 000417647A CA 417647 A CA417647 A CA 417647A CA 1201936 A CA1201936 A CA 1201936A
- Authority
- CA
- Canada
- Prior art keywords
- tank
- rotor
- pump
- housing
- cylindrical surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
- F04B23/023—Pumping installations or systems having reservoirs the pump being immersed in the reservoir only the pump-part being immersed, the driving-part being outside the reservoir
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85978—With pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
A B S T R A C T
An arrangement for dismounting and mounting a pump (4) fixed to a tank without emptying the tank, wherein the housing (5) of the pump is connected to a flange of the outlet in the wall (1) and a rotor (6) disposed in the housing extends through the opening into the tank. In the housing (5) or in its extension (21) there is a cylindrical surface (10) the diameter of which is bigger than the biggest outer diameter (19) of the rotor. A member (9) connected to the bearing (7) of the rotor is disposed sealingly inside the cylindrical surface of the rotor and said member is axially movable, maintaining its sealing contact with said surface, a distance longer than the length (L) of the part of the rotor inside the tank. It also comprises closing means (14) which can be moved in front of the inlet (16) of the pump.
Fig. 7
An arrangement for dismounting and mounting a pump (4) fixed to a tank without emptying the tank, wherein the housing (5) of the pump is connected to a flange of the outlet in the wall (1) and a rotor (6) disposed in the housing extends through the opening into the tank. In the housing (5) or in its extension (21) there is a cylindrical surface (10) the diameter of which is bigger than the biggest outer diameter (19) of the rotor. A member (9) connected to the bearing (7) of the rotor is disposed sealingly inside the cylindrical surface of the rotor and said member is axially movable, maintaining its sealing contact with said surface, a distance longer than the length (L) of the part of the rotor inside the tank. It also comprises closing means (14) which can be moved in front of the inlet (16) of the pump.
Fig. 7
Description
z~
The present invention is related to an arrangement for dismounting and mounting a pump :Eixed to a pulp tank without emptying the ~ank. The pump housing is attached to a flange of an outlet on the wall of the tank and a rotor disposed in the housing extends through the opening into the tank.
When discharging pulp o-f a high consistency, e.g. 8 to 12 %, the pumping apparatus used can be one provided with a rotor disposed in the out-let of the tank, this rotor causing the pulp to be fluidized so that the pulp flows out from the tank. A pumping apparatus of this kind is disclosed e.g. in the Finnish patent application No. 781071.
When the pumping apparatus is to be dismounted for maintenance, previously the tank first had to be emptied. The emptying of the tank is, however, a cumbersome operation which everybody wants to avoid.
It is an object of the present invention to enable the dismounting o-f a pumping apparatus from a tank without emptying the tank.
The invention provldes an arrangement for dismounting and mounting a pump fixed to a wall of a tank without emptying the tank, wherein the pump has a housing connected to a flange of an outlet in said wall and a rotor disposed in the housing extends through the outlet opening into the tank, comprising: said housing having a cylindrical inner surface o-f a diameter greater than the ma~imum outer diameter of the rotor, a member supporting a bearing for the rotor being disposed sealingly inside said cylindrical sur-face of the housing, said member being axially movable while maintaining its sealing contact with said cylindrical surface over a distance longer than the axial length of the part of the rotor inside the tank and a closing means which can be moved in front of said outlet to close the inlet of the pump after the rotor has been moved axially to withdraw said part from said tank.
~.~
:
~20~L~3Ei The invention will be described further, by way of example, with reference to the accompanying drawings in which:-Fig. 1 is a vertical section of the pumping apparatus connected toa tank with the closing and sealing devices according to the invention;
Fig. 2 shows the apparatus according to Fig. 1 as seen in the direction of the arrow A;
Fig. 3 shows the apparatus according to Fig. l with the closing device closed;
Fig. 4 shows the apparatus according to Fig. 3 as seen in the direction of the arrow A; and Figs. 5 - 8 show an alternative embodiment.
In the figures, the wall of the pulp tank is indicated by reference numeral 1. A plate 3 is attached to a flange 2 of an opening in the wall.
The housing 5 of a pump 4 is connected to the plate 3. In the housing there is disposed a rotor 6 provided with blades which extends inside the tank.
e rotor is Eixed to a shaft 8 rotatably journalled in bearing 7. The bearing is connected to a m~mber 9 forming the back wall of the pump housing. The member 9 is axially movable, guided by a cylindrical surface 10, a distance longer than the length L of the part in the rotor 6 so that it maintains its sealing contact with said surface.
The sealing against the cylindrical surface 10 is performed by means of a seal mg ring 11. Seals 12 of the shaft 8 have also been disposed in the member 9. A pin 13 is journalled to the plate 3. A plate like closing member 14 is attached to the pin 13. The closing plate can be pivoted ~y means of a crank 15 in front of the inlet of the pump, whexe it is used ':
used for sealing purposes against the sealing surface surrounding the inlet. The diameter of the cylindrical surface is bigger than the biggest diameter 19 of the rotor.
The apparatus illustrated in Figs. 1 - 4 operates as follows:
When the p~np is to be dismounted and there is pulp in the tank, the member 9 with its rotor 6 and its bearings 7 is pulled so far from the housing S that the end 18 of the rotor disposed inside the tank will be belcw the level 17 of the sealing surface (Fig. 3). In this position, the member 9 is still guided by the cylindrical surface 10 of the housing and the sealing ring ll has a sealing contact with said surface. There-after the closing plate 14 is turned in front of ~he inlet 16 of the pump by means of the crank 15 (Fig. 2). Since the opening leading out from the tank is now closed, the pump can be removed.
When remounting the pump, the above mentioned proceedings are re-peated in an opposite order. The closing plate 14 is turned after the mounting of the pump to such a position that the inlet 16 of the pump is free ~Fig. 2). In order to help the opening of the closing member the housing of the pump is connected to a pressure line 20 through which liquid can be fed to the space between the closing plate and the member 9 in order to achieve pressure on both sides of the closing plate. Also rinsing liquid can be fed to the housing through the line 20 before the opening 16 is closed for removing the pumping apparatus.
In the alternative embcd~ment illustrated in Figs. 5 to 8 the end of the rotor 6 inside the tank is longer than the movement of the member 9 in a sealing contact with the cylindrical surface of the housing 10 allows.
Therefore a guiding bush 21 is connected to the housing. The inner ~surface ~ .
of the bush acts as an extension to the cylindrical surface of the housing 5. Otherwise the system is similar to the one in Figs. 1 - 4.
The specific embodiments shown are not meant to limit the invention and several variations are possible within the SCOp2 of the claims.
. :
The present invention is related to an arrangement for dismounting and mounting a pump :Eixed to a pulp tank without emptying the ~ank. The pump housing is attached to a flange of an outlet on the wall of the tank and a rotor disposed in the housing extends through the opening into the tank.
When discharging pulp o-f a high consistency, e.g. 8 to 12 %, the pumping apparatus used can be one provided with a rotor disposed in the out-let of the tank, this rotor causing the pulp to be fluidized so that the pulp flows out from the tank. A pumping apparatus of this kind is disclosed e.g. in the Finnish patent application No. 781071.
When the pumping apparatus is to be dismounted for maintenance, previously the tank first had to be emptied. The emptying of the tank is, however, a cumbersome operation which everybody wants to avoid.
It is an object of the present invention to enable the dismounting o-f a pumping apparatus from a tank without emptying the tank.
The invention provldes an arrangement for dismounting and mounting a pump fixed to a wall of a tank without emptying the tank, wherein the pump has a housing connected to a flange of an outlet in said wall and a rotor disposed in the housing extends through the outlet opening into the tank, comprising: said housing having a cylindrical inner surface o-f a diameter greater than the ma~imum outer diameter of the rotor, a member supporting a bearing for the rotor being disposed sealingly inside said cylindrical sur-face of the housing, said member being axially movable while maintaining its sealing contact with said cylindrical surface over a distance longer than the axial length of the part of the rotor inside the tank and a closing means which can be moved in front of said outlet to close the inlet of the pump after the rotor has been moved axially to withdraw said part from said tank.
~.~
:
~20~L~3Ei The invention will be described further, by way of example, with reference to the accompanying drawings in which:-Fig. 1 is a vertical section of the pumping apparatus connected toa tank with the closing and sealing devices according to the invention;
Fig. 2 shows the apparatus according to Fig. 1 as seen in the direction of the arrow A;
Fig. 3 shows the apparatus according to Fig. l with the closing device closed;
Fig. 4 shows the apparatus according to Fig. 3 as seen in the direction of the arrow A; and Figs. 5 - 8 show an alternative embodiment.
In the figures, the wall of the pulp tank is indicated by reference numeral 1. A plate 3 is attached to a flange 2 of an opening in the wall.
The housing 5 of a pump 4 is connected to the plate 3. In the housing there is disposed a rotor 6 provided with blades which extends inside the tank.
e rotor is Eixed to a shaft 8 rotatably journalled in bearing 7. The bearing is connected to a m~mber 9 forming the back wall of the pump housing. The member 9 is axially movable, guided by a cylindrical surface 10, a distance longer than the length L of the part in the rotor 6 so that it maintains its sealing contact with said surface.
The sealing against the cylindrical surface 10 is performed by means of a seal mg ring 11. Seals 12 of the shaft 8 have also been disposed in the member 9. A pin 13 is journalled to the plate 3. A plate like closing member 14 is attached to the pin 13. The closing plate can be pivoted ~y means of a crank 15 in front of the inlet of the pump, whexe it is used ':
used for sealing purposes against the sealing surface surrounding the inlet. The diameter of the cylindrical surface is bigger than the biggest diameter 19 of the rotor.
The apparatus illustrated in Figs. 1 - 4 operates as follows:
When the p~np is to be dismounted and there is pulp in the tank, the member 9 with its rotor 6 and its bearings 7 is pulled so far from the housing S that the end 18 of the rotor disposed inside the tank will be belcw the level 17 of the sealing surface (Fig. 3). In this position, the member 9 is still guided by the cylindrical surface 10 of the housing and the sealing ring ll has a sealing contact with said surface. There-after the closing plate 14 is turned in front of ~he inlet 16 of the pump by means of the crank 15 (Fig. 2). Since the opening leading out from the tank is now closed, the pump can be removed.
When remounting the pump, the above mentioned proceedings are re-peated in an opposite order. The closing plate 14 is turned after the mounting of the pump to such a position that the inlet 16 of the pump is free ~Fig. 2). In order to help the opening of the closing member the housing of the pump is connected to a pressure line 20 through which liquid can be fed to the space between the closing plate and the member 9 in order to achieve pressure on both sides of the closing plate. Also rinsing liquid can be fed to the housing through the line 20 before the opening 16 is closed for removing the pumping apparatus.
In the alternative embcd~ment illustrated in Figs. 5 to 8 the end of the rotor 6 inside the tank is longer than the movement of the member 9 in a sealing contact with the cylindrical surface of the housing 10 allows.
Therefore a guiding bush 21 is connected to the housing. The inner ~surface ~ .
of the bush acts as an extension to the cylindrical surface of the housing 5. Otherwise the system is similar to the one in Figs. 1 - 4.
The specific embodiments shown are not meant to limit the invention and several variations are possible within the SCOp2 of the claims.
. :
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An arrangement for dismounting and mounting a pump fixed to a wall of a tank without emptying the tank, wherein the pump has a housing connected to a flange of an outlet in said wall and a rotor disposed in the housing ex-tends through the outlet opening into the tank, comprising:
said housing having a cylindrical inner surface of a diameter greater than the maximum outer diameter of the rotor, a member supporting a bearing for the rotor being disposed seal-ingly inside said cylindrical surface of the housing, said member being axially movable while maintaining its sealing con-tact with said cylindrical surface over a distance longer than the axial length of the part of the rotor inside the tank, and a closing means which can be moved in front of said outlet to close the inlet of the pump after the rotor has been moved axially to withdraw said part from said tank.
said housing having a cylindrical inner surface of a diameter greater than the maximum outer diameter of the rotor, a member supporting a bearing for the rotor being disposed seal-ingly inside said cylindrical surface of the housing, said member being axially movable while maintaining its sealing con-tact with said cylindrical surface over a distance longer than the axial length of the part of the rotor inside the tank, and a closing means which can be moved in front of said outlet to close the inlet of the pump after the rotor has been moved axially to withdraw said part from said tank.
2. An arrangement according to claim 1, wherein the closing means is formed by a pivotably journalled plate located inside the tank, and being connected to a crank outside the tank.
3. An arrangement according to claim 1, characterized in that the hous-ing of the pump is connected to a pressure line which opens into the space between the sealing member and the closing means.
4. An arrangement according to claim 1, 2 or 3 wherein said cylindrical surface is formed partly by an extension piece which is connectible to the pump housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI81.4016 | 1981-12-15 | ||
| FI814016A FI66464C (en) | 1981-12-15 | 1981-12-15 | ARRANGEMANG FOER DEMONTERING OCH MONTERING AV EN PUMP FAEST VI EN BEHAOLLARE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1201936A true CA1201936A (en) | 1986-03-18 |
Family
ID=8514954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000417647A Expired CA1201936A (en) | 1981-12-15 | 1982-12-14 | Arrangement for dismounting and mounting a pump fixed to a tank |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4476886A (en) |
| JP (1) | JPS58107900A (en) |
| BR (1) | BR8207272A (en) |
| CA (1) | CA1201936A (en) |
| FI (1) | FI66464C (en) |
| SE (1) | SE456518B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4780053A (en) * | 1978-04-10 | 1988-10-25 | Johan Gullichsen | Method and apparatus for pumping fiber suspensions |
| US4637779A (en) * | 1985-05-17 | 1987-01-20 | Kamyr, Inc. | Two stage medium consistency pulp pumping |
| JPS6338693A (en) * | 1986-07-31 | 1988-02-19 | Nippon Air Brake Co Ltd | Pressure regulating method for rolling stock |
| US4877368A (en) * | 1988-11-08 | 1989-10-31 | A. Ahlstrom Corporation | Fluidizing centrifugal pump |
| GB2227647B (en) * | 1989-02-01 | 1993-02-17 | Great Eastern Petroleum | Method and apparatus for introducing and positioning a tank contents removal means |
| NL8900942A (en) * | 1989-04-14 | 1990-11-01 | Douwe Egberts Tabaksfab | DEVICE FOR EXTRACTING LIQUID USING A WATER JET DEVICE. |
| FI110708B (en) * | 1990-08-14 | 2003-03-14 | Sulzer Pumpen Ag | Arrangement and method for treating a gas and / or air-containing liquid and / or pulp suspension with a centrifugal pump and use of a centrifugal pump |
| US5413460A (en) * | 1993-06-17 | 1995-05-09 | Goulds Pumps, Incorporated | Centrifugal pump for pumping fiber suspensions |
| WO1998027276A1 (en) * | 1996-12-19 | 1998-06-25 | Ahlstrom Paper Group Oy | Using centrifugal pumps in the foam process of producing non-woven webs |
| FI112392B (en) | 1996-12-19 | 2003-11-28 | Ahlstrom Glassfibre Oy | Method and equipment for treating a foam mixture formed and / or needed in the manufacture of a fibrous web formed by a foam process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2103797A (en) * | 1928-03-19 | 1937-12-28 | Conover Company | Conduit for washing machines |
| FR960138A (en) * | 1945-12-29 | 1950-04-13 | ||
| DE1131150B (en) * | 1960-09-29 | 1962-06-07 | Josef Bertels | Bunker closure with a segment-shaped gate valve that can be pivoted around a vertical axis |
| DE1484855A1 (en) * | 1964-01-24 | 1969-05-14 | Loewe Pumpenfabrik Gmbh | Water supply system |
| US3906967A (en) * | 1974-05-08 | 1975-09-23 | Maytag Co | Dishwasher |
| US4221547A (en) * | 1978-09-18 | 1980-09-09 | White Consolidated Industries, Inc. | Resilient mount for dishwasher motor and pump assembly |
-
1981
- 1981-12-15 FI FI814016A patent/FI66464C/en not_active IP Right Cessation
-
1982
- 1982-12-06 US US06/447,211 patent/US4476886A/en not_active Expired - Lifetime
- 1982-12-13 SE SE8207102A patent/SE456518B/en not_active IP Right Cessation
- 1982-12-14 CA CA000417647A patent/CA1201936A/en not_active Expired
- 1982-12-14 BR BR8207272A patent/BR8207272A/en not_active IP Right Cessation
- 1982-12-15 JP JP57218538A patent/JPS58107900A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE8207102D0 (en) | 1982-12-13 |
| US4476886A (en) | 1984-10-16 |
| BR8207272A (en) | 1983-10-18 |
| JPS58107900A (en) | 1983-06-27 |
| FI814016L (en) | 1983-06-16 |
| SE8207102L (en) | 1983-06-16 |
| SE456518B (en) | 1988-10-10 |
| JPS6222000B2 (en) | 1987-05-15 |
| FI66464C (en) | 1984-10-10 |
| FI66464B (en) | 1984-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |